A scene from Yuuhi's past provides some background on the arranged marriage between Jun'ichi and Yuuhi and to her moving in with him. Yuuhi and Jun'ichi have trouble adjusting to living together, and Yuuhi spends her first night sleeping on the couch. The next day afer school Yuuhi goes grocery shopping with Minato for dinner. Yuuhi is amazed by the supermarket and by Minato's shopping savviness. That evening after supper the Nagase residence loses power and Yuuhi trips in the dark and falls on Jun'ichi leading to another very awkward situation. Minato resets the breakers and power is restored, but Yuuhi blames Jun'ichi and puts him into a headlock, which leads to another awkward situation. Yuuhi ends up sleeping in Minato's room and the two girls are able to talk and become better friends.
あらぬ暴走で優姫に嫌われてしまった準一…。だが、そんな準一を待ち受けていたものは、優姫が親が決めた許嫁でこれから準一と一緒に暮らすという、なんともうらやましいシチュエーションだった。これまで妹の湊と二人で暮らしてきた長瀬家だが、許嫁の優姫が現れたことでいったいどうなる…!?
